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Google: Gemini 3 Flash Preview vs OpenAI: GPT-5.3-Codex

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Last updated at : 2026-02-27 15:16

Summary

Metric Google: Gemini 3 Flash Preview none Release: Unknown release date OpenAI: GPT-5.3-Codex medium Release: Unknown release date
Rank #10 #7
Score 7.21 7.93
Consistency 9.36 8.84
Cost per result 0.078 4.641
Total Cost $0.007 $0.465
Tests Correct
Wrong Tests 4 4
Attempt pass rate 71.8% 78.6%
Flaky tests 1 2
Output Tokens 734 1,201
Reasoning Tokens 0 30,056

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 7.00 10.00 66.7% 0 240 0
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 216 1,421
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 9.88 10.00 100.0% 0 279 0
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 234 735
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 7.00 10.00 66.7% 0 18 0
OpenAI: GPT-5.3-Codex 4.00 7.21 55.6% 1 64 25,308
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 5.50 5.81 66.7% 1 74 0
OpenAI: GPT-5.3-Codex 9.00 10.00 50.0% 0 93 693
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 7.00 10.00 66.7% 0 123 0
OpenAI: GPT-5.3-Codex 7.00 7.38 77.8% 1 340 1,407
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 0.00 0.00 0.0% 0 0 0
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 254 492

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